The interviews of Rosenborg include: one conducted by Colette Roberts in 1968 for her "Meet the Artist" class taught a NYU (1 tape); one conducted by Irving Sandler in 1968 (3 tapes); and one conducted by Sam Roberts in 1967 concerning Rosenborg's European travels during 1966 (7 tapes and 3 duplicates). Also included are two tapes recorded in 1968 of Rosenborg reading a letter he wrote to his dealer Marian Willard; two tapes recorded in 1968 of Rosenborg reading letters that he wrote in 1966 to William Nyland from Europe; and two tapes of artist and poet Irene Rice Pereira reading her poetry.